Recent content by maarrcc1994

Its really clear where I went wrong now, thank you so much! :)

|1 4 8 | |p1| 26 |5 7 0 | |p2| = 38 |8 12 2 | |p3| 66 The determinant= 1*[7*2] - [12*0]=14 -4*[5*2] - [8*0]=-40 8*[5*12] - [7*8]= 32 14--40-32=22 I found the determinant to be 22 so I'm hoping that part was right.Then i moved on to finding each cofactor- | 7 0| |5 0|...

I've only been taught the inversion method so that's what I usually use, I tried with cramers rule but still couldn't seem to get it right, could you show me using inversion? :)

Hopefully someone can help me solve this, I'm usually quite good at matrix algebra but for some reason I cannot solve this equation. p1+4p2+8p3=26 5p1+7p2=38 8P1+12p2+2p3=66 If somebody could help me with the values of p1 p2 p3 that would be a great help :)